Roller-bearing.



Nioh, 7&8= &@ & PATENTED SEPT. 15, 1903. J. HUTGHISON.

ROLLER BEARING.

APPLICATION FILED FEB. 12, 1903.

R0 MODEL.

1 ozmu UNITED STATES Patented September 15, 1903.

JOHN HUTOHISON, OF JACKSON, MICHIGAN.

ROLLER-BEARING.

SPECIFICATION forming part of Letters Patent No. 738,808, dated September 15, 1903.

Application filed February 12, 1903. Serial No. 143,026. (No model.)

To all whom it may concern.-

Be it known that I, JOHN HUTOHISON, a citizen of the United States, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Roller-Bearings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in roller-bearin gs, and more particularly to such bearings in which the so-called cage is dispensed with, such as is shown in my PatentNo. 681,793, dated September 3, 1901; and its object is to simplify and cheapen the construction, to provide improved means for maintaining the alinement of the rolls with the axis of the shaft, and to provide the device with certain new and useful features hereinafter more fully described,and particularly pointed out in the claim.

My invention consists, essentially, of a case surrounding the shaft and having annular heads, a series of large rolls between the shaft and case and engaging the same at their respective sides, and smaller rolls inserted between the large rolls to space apart and aline the same, all of the rolls being of the same length and the small rolls each having a diameter greater than the space between the adjacent large rolls, as will more fully appear by reference to the accompanying draw ings, in which- Figure 1 is a side elevation of a device embodying my invention with one side of the case removed to show the rolls; Fig. 2, a transverse section of the same; Fig. 3, a side elevation of the ,device, and Fig. 4 an end elevation of the same.

Like letters refer to like parts in all of the figures.

A represents any rotative shaft supported in the bearing.

B is a plain cylindrical or tubular casing having an internal diameter considerably greater than the shaft.

C O are annular heads surrounding the shaft, but not touching the same, and de tachably secured to the respective ends 'of the case and arranged in parallel planes and engaging the respective ends of all of the rolls.

D represents a series of plain straight rolls of such diameter that the diameter of two of the same and that of the shaft added together equals the internal diameter of the case B. These rolls D engage the case and shaft at their respective sides and roll freely between the same and are of such number and diameter that they are spaced apart substantially as shown. To space these rolls apart equally and maintain alinement thereof with each other and with the axis of the shaft, smaller rolls E and F are inserted in each space between the rolls D. The rolls E are larger than the rolls F and smaller than the rolls D and are inserted in the spaces between the rolls D next the case, and the rolls F are smaller than the rolls E and inserted in the spaces next the shaft. Each of said rolls F is also of greater diameter than the space between the adjacent rolls D, whereby the small rolls are retained in the spaces between the large rolls and the shaft. When new, the rolls are so proportioned that they will fit just close enough to roll freely without material clearance between them, and whenever after long use their diameters are so reduced as to be too loose they may be tightened by taking out one or more of the smaller rolls and inserting larger ones. So, also, in fitting new ones an accurate fit may secured in like manner.

When in operation, the rolls E, having no contact with the shaft and carrying no load, will engage and roll on the concave inner surface of the case, and thus constantly tend to assume correct alinement, and thus also aline the rolls D as the latter are in turn released from pressure of the shaft at each revolution about the same. At high speed the centrifugal force also crowds the rolls F outward between the rolls D, and thus takes up all clearance between the same. Either the rolls E or the rolls F may be dispensed with and the device will operate; but I prefer to use all three sets of rolls, as best adapting engaging the large rolls and the case, and a the device to various speeds and as giving series of smaller rolls engaging the large rolls the best results. and the shaft.

Havingthus fully described myinvention, In testimony whereof I affix my signature 5 what I claim, and desire to secure by Letters in presence of two witnesses.

Patent JOHN I-IUTOHISON.

The combination of a case having annular heads, a shaft in the axis of the case, a series Witnesses: of large rolls engaging the shaft and case and LYMAN B. TRUMBULL, 10 supporting the shaft, a series of small rolls ROBERT A. SMITH. 

